My wifes Fabia 1.4 Mpi has been running like a dog, and fuel consumption is up. Engine light is on.

I checked the fault codes with a generic check/reset tool (sealey) and it gave a MAF error.

I popped the bonnet to inspect / disconnect / clean / replace the MAF. only to be left scratching my head and feeling a bit foolish.

Where the is the MAF on this engine? the hose connects directly to the top of the air-filter housing (where I'd expect the MAF to be)

the other end of this hose fits on top of the throttle body, I removed it and saw the butterfly grinning at me! Not a sensor in sight, and no giveaway wiring connector.

Can anyone help me out here?

Engine type is AQW

:S

Many Thanks

Steve

I asked the same question before - and was told it doesn't have one..

I asked the same question before - and was told it doesn't have one..

Cheers Spedz, so I wonder what the MAF error is that was thrown up? When the light comes on again - tomorrow no doubt, I'll get the full error description and fault code. Maybe that will shed some light on the matter.

Cheers

Steve.

OK, so I've found that the 1.4MPI engine does not have a MAF, but the engine is throwing a P0101^$10 error which indicates a maf fault.

Any insight on this? The engine coolant temp sensor was recently changed, could this be faulty and causing an erroneous error no. ?

Cheers

Steve

P0101 Mass or Volume Air Flow Circ Range/Performance is the exact fault

Steve

Edited 9 March, 201016 yr by steveshaltz

Try getting your car scanned by a proper VAGCOM system?

The basic ones might be misreading it or something? - (Just a vague guess :p)

I changed my temp sensor a few months back and had no such error code.

I wouldn't have thought air flow and coolant temp could be related at all?

Hopefully someone who knows what they're talking about with come along as I really know bugger all..

I have a feeling that the temp sensor that was fitted was the wrong one (grey collar instead of black collar).

Just proves that if you want something done right, do it yourself (or as in my wifes case, get me to do it!)

Steve

Grey temp sensor is right. Having similar problems on my wife's car, and have replaced MAP (manifold air pressure) sensor on basis that it's the only thing I can see on the induction side that would do a similar job to a MAF. It lives below throttle body, facing the back of the engine bay. Still not working, though, but this could be because I got a pattern part rather than OEM. Will be having a look on VAG-COM later, so if I get it working, I'll let you know...

Light is gone from dash, but VAG-COM is still showing 17549 (MAP sensor fault) as opposed to P0101 from the hand-held scanner. Wiring seems OK, so will see if putting an OEM part in will fix it...

OEM part seems to have done the trick - 03D 906 051 A is the part number. Cost just under fifty quid rather than the twenty quid + P&P of the pattern part, but clearly worth it. MPG is up about 25% too, so will have paid for itself in a few weeks!

OEM part seems to have done the trick - 03D 906 051 A is the part number. Cost just under fifty quid rather than the twenty quid + P&P of the pattern part, but clearly worth it. MPG is up about 25% too, so will have paid for itself in a few weeks!

Hi, Was this very easy to change? Please could you give me some advice as to how complicated it might be? Someone suggested removing the manifold cover etc, and coming acorss torque screws....wondered if this was all true?

thank you, in advance.

Michelle

The job itself is easy, but the MAP's location on the MPi is what makes it tricky to replace - there's only a few inches of room, and you can't easily see what you're doing!

The MAP sticks into the inlet manifold, below the throttle body. You'll need to remove the engine cover, and if you're not sure how to do that, have a search for my coolant temp sensor technical guide. Once you've found the MAP, use a small screwdriver or Allen key to release the wiring plug, and move it out of the way. The part itself is held in with Torx screws, but they're not tight so a small flat-head screwdriver would probably do you if you don't have any Torx bits. When you have the screws out, you'll need to jiggle the MAP some to get it out due to the O-ring, and likewise when you're putting the new one in...

Other than getting the fault code cleared (try disconnecting the battery if you don't have VAG-COM and it won't go by itself?) that's it!